//
//  AuthenticationView.swift
//  JobTrackerPro
//
//  Created by Jake Steirer on 12/29/23.
//

import SwiftUI
import Combine

struct IdentifiableError: Identifiable {
    let id = UUID()
    let message: String
}

struct AuthView: View {
    @ObservedObject var viewModel: JobApplicationViewModel
    @State private var email: String = ""
    @State private var password: String = ""
    @State private var storedEmail: String = "" // Separate variable to hold the email
    @State private var storedPassword: String = "" // Separate variable to hold the password
    @State private var showingLogin = false
    @State private var showingCreateAccount = false
    @State private var identifiableError: IdentifiableError?
    @FocusState private var isInputActive: Bool // For iOS 15+

    var body: some View {
        VStack {
            Image(systemName: "briefcase.fill")
                .resizable()
                .scaledToFit()
                .frame(width: 120, height: 120)
                .padding()

            Text("Welcome to Job Tracker Pro")
                .font(.largeTitle)

            TextField("Email", text: $email)
                .autocapitalization(.none)
                .keyboardType(.emailAddress)
                .disableAutocorrection(true)
                .padding()
                .border(Color.gray)
                .onChange(of: email) { [email] in
                                    storedEmail = email
                }
                .onSubmit {
                    storedPassword = password // Store the password when submit the field
                }
            
            SecureField("Password", text: $password)
                .padding()
                .border(Color.gray)
                .onChange(of: password) { [password] in
                    storedPassword = password
                }
                .onSubmit {
                    storedPassword = password // Store the password when submit the field
                }
            
            Button("Log In") {
                hideKeyboard() // Dismiss the keyboard
                // Use storedEmail and storedPassword to log in
                // If you're handling login directly in AuthView
                viewModel.logIn(email: storedEmail, password: storedPassword) { success, message in
                    // Handle completion
                }

                showingLogin = true
            }
            .padding()

            Button("Create Account") {
                hideKeyboard() // Dismiss the keyboard
                // Use storedEmail and storedPassword to create an account
                // If you're handling account creation directly in AuthView
                viewModel.createAccount(email: storedEmail, password: storedPassword) { success, message in
                        // Handle completion
                }
                showingCreateAccount = true
            }
            .padding()
        }
        .alert(item: $identifiableError) { error in
            Alert(
                title: Text("Error"),
                message: Text(error.message),
                dismissButton: .default(Text("OK")) {
                    identifiableError = nil
                }
            )
        }
        .onReceive(viewModel.$error) { error in
            if let error = error {
                identifiableError = IdentifiableError(message: error.localizedDescription)
            }
        }
    }
}

#if canImport(UIKit)
extension View {
    func hideKeyboard() {
        UIApplication.shared.sendAction(#selector(UIResponder.resignFirstResponder), to: nil, from: nil, for: nil)
    }
}
#endif